Again, this is very slang and very informal.

同样提醒一下，这也是很口语和不正式的说法。

And Emma's here to teach me some British slang.

艾玛来这里教我一些英国俚语。

Americans, for their part, eagerly import fashionable British slang.

美国人则热衷于引进时髦的英国俚语。

I would say even slang, especially used by younger people.

我想说它甚至是个俚语，尤其是年轻人使用的。

So, to have a butcher's is cockney rhyming slang.

所以，to have a butcher's 是伦敦方言押韵俚语。

But, why are we seeing this slang in a newspaper headline?

但是，为什么我们会在报纸的标题上看到这种俚语呢？

It's really, really, really, really slang, and it's bad.

这是非常非常非常非常俚语的用法，这是不正确的用法。

You mean actually flossing? -No, it's slang. -Right, it's slang.

你说真正的flossing（本意是牙线或剔牙）？-不，这是俚语。－好的，这是俚语。

Or is that regional slang or do you say it all over the country?

或者你也可以说或，这个俚语是地区性的还是全国都这么说？

Feeling ick is American slang for feeling sick, often because of something disgusting or disturbing.

Feeling ick是美式俚语，指感觉不舒服，通常是因为恶心或令人不安的事物。